Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
9151
PUT
Lipocine
LPCN
$17.1M
| $3K | ﹤0.01% |
229
-2,606
| -92% | -$40.6K |
|
9152
PUT
LXP Industrial Trust
LXP
$3.53B
| $3K | ﹤0.01% |
+60
| New | +$3.61K |
|
9153
CALL
LSI Industries
LYTS
$853M
| $3K | ﹤0.01% |
+600
| New | +$3.85K |
|
9154
PUT
M/I Homes
MHO
$3.83B
| $3K | ﹤0.01% |
100
-1,000
| -91% | -$43.5K |
|
9155
CALL
Mirum Pharmaceuticals
MIRM
$6.89B
| $3K | ﹤0.01% |
200
-1,600
| -89% | -$37.7K |
|
9156
PUT
Martin Midstream Partners
MMLP
$95.9M
| $3K | ﹤0.01% |
900
-1,900
| -68% | -$8.46K |
|
9157
CALL
Movado Group
MOV
$812M
| $3K | ﹤0.01% |
100
-1,000
| -91% | -$35.1K |
|
|
MSB
9158
Mesabi Trust
MSB
$295M
| $3K | ﹤0.01% |
156
-1,483
| -90% | -$38.6K |
|
9159
PUT
Matrix Service
MTRX
$347M
| $3K | ﹤0.01% |
+600
| New | +$3.76K |
|
9160
iShares Global Materials ETF
MXI
$338M
| $3K | ﹤0.01% |
50
-200
| -80% | -$17.3K |
|
|
LUXE
9161
PUT
LuxExperience B.V.
LUXE
$1.1B
| $3K | ﹤0.01% |
400
-2,100
| -84% | -$23.8K |
|
9162
CALL
National CineMedia
NCMI
$354M
| $3K | ﹤0.01% |
330
-2,280
| -87% | -$38.5K |
|
9163
CALL
Neonode
NEON
$13M
| $3K | ﹤0.01% |
600
-1,400
| -70% | -$7.86K |
|
|
9164
PUT
Neonode
NEON
$13M
| $3K | ﹤0.01% |
+700
| New | +$3.93K |
|
9165
CALL
InspireMD
NSPR
$32M
| $3K | ﹤0.01% |
1,600
+700
| +78% | +$1.66K |
|
|
NTST
9166
NETSTREIT Corp
NTST
$2.16B
| $3K | ﹤0.01% |
+171
| New | +$3.61K |
|
9167
News Corp Class A
NWSA
$14.5B
| $3K | ﹤0.01% |
+200
| New | +$3.68K |
|
|
NYC
9168
American Strategic Investment Co
NYC
$23.9M
| $3K | ﹤0.01% |
78
-238
| -75% | -$18K |
|
9169
CALL
Oil States International
OIS
$522M
| $3K | ﹤0.01% |
700
-66,600
| -99% | -$465K |
|
9170
CALL
One Stop Systems
OSS
$309M
| $3K | ﹤0.01% |
1,000
-1,800
| -64% | -$7.67K |
|
9171
PUT
Owlet
OWLT
$153M
| $3K | ﹤0.01% |
150
-3,471
| -96% | -$172K |
|
9172
PUT
Oxford Square Capital
OXSQ
$151M
| $3K | ﹤0.01% |
+1,000
| New | +$3.97K |
|
9173
CALL
Pulse Biosciences
PLSE
$2.09B
| $3K | ﹤0.01% |
2,000
-800
| -29% | -$2.01K |
|
9174
CALL
PRA Group
PRAA
$648M
| $3K | ﹤0.01% |
+100
| New | +$3.96K |
|
9175
CALL
PROG Holdings
PRG
$1.75B
| $3K | ﹤0.01% |
200
| – | – |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.